<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="referrer" content="no-referrer" />
    <title>多边形</title>
    <style>
        body {
            position: absolute;
            margin: 0;
            width: 100%;
            height: 100%;
        }

        #mapContainer {
            left: 0px;
            top: 0px;
            width: 100%;
            height: 100%;
            float: left;
        }
    </style>
</head>

<body>
    <div id="mapContainer" style="position: relative;"></div>
</body>
<script src='/GiswayEngine.js'></script>
<script type="text/javascript">
    var polygon;
    var startPoint;
    var endPoint;

    window.app = new GE.App('mapContainer', {
        position: [120.170646, 30.28362, 1000], //相机的位置
        lookAt: [120.170646, 30.28362, 0], //相机看向的地图位置
        cameraScrollSpeed: 5, //鼠标滚动时，控制相机移动的速度
        minZoom: 3, //允许地图的最小层级
        maxZoom: 18, //允许地图的最大层级
        ambientLightIntensity: 5,
        useDefaultTexture: true, //是否使用瓦片默认纹理
        background: "Fog", //背景的类型，参数有如下类型：None, Fog, Color, Gradient, Image, Sky, Image。使用Fog地图的性能会比较好
        // backGroundColorA:'#AAAAFF', //当background的值为Gradient时，需要配置该参数。最下端颜色，默认值为#0000FF
        // backGroundColorB:'#0000FF', //当background的值为Gradient时，需要配置该参数。最上端颜色，默认值为#FF0000
        // backGroundColor: '#F5F5F5', //当background的值为Color时，需要配置该参数，默认值为#00BFFF
        // imageUrl: 'http://localhost:9000/examples/assets/img_logo.39362dc1.png', //当background的值为Image时，需要配置该参数。默认值为null
        baseLayer: [
            //影像底图
            {
                url: ' https://server.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}', //影像底图的url
                // url: 'http://115.236.87.26:8848/googleTiles/china_image/{z}/{y}/{x}.jpg',
                urlDecimal: true, //影像底图url中的瓦片行列号是否是十进制，true表示十进制，false表示十六进制
                tileType: 'image', //影像底图
                canNotSelect: false, //true表示该图层不参与射线拾取，false表示图层参与射线拾取
            }
        ]
    });
    
    window.app.on('Click', function (e) {
        if(startPoint && endPoint){
            return;
        }

       if(!startPoint){
            startPoint = e.lnglat.clone().toEPSGWeb();
            return;
       }

       if(!endPoint){
            endPoint= e.lnglat.clone().toEPSGWeb();

            let lineData = {
            pointArray: [startPoint, endPoint],  //多边形的顶点数组
            color: '#00FA9A',
            lineWidth: 5,  //线的宽度
        };
        let polyline = new GE.Polyline(lineData);
        app.add(polyline);

        if(polygon.parent){
            polygon.parent.remove(polygon);
        }
            
        let polygonPositionInworld = polygon.position.clone();
        polygonPositionInworld = polygon.getWorldPosition(polygonPositionInworld); //获取多边形在世界坐标系中的位置

        let linePositionInworld = polyline.position.clone();
        linePositionInworld = polyline.getWorldPosition(linePositionInworld); //获取线在世界坐标系中的位置

        polyline.add(polygon);
        let positionPolygon = polygonPositionInworld.sub(linePositionInworld); //多边形在线坐标系中的位置
        polygon.position.copy(positionPolygon);
        polygon.material.side = 2; //材质双面渲染，不然旋转后，可能看不到了

        let rotateVector = endPoint.clone().sub(startPoint).normalize();
        polyline.rotateOnAxis(rotateVector, Math.PI/2);
        return;
       }
    });

    window.app.on('MouseHover', function (e) {
        console.log(e);
    });
    window.app.on('MouseUnHover', function (e) {
        console.log("MouseUnHover");
    });


    addPolygon(); //添加多边形

    
    function addPolygon(){
        let img = 'http://192.168.2.100:8702/resources/1b8b2fcb26b020120aebfac57779e06a/images/img_logo.39362dc1.png'; //'/examples/assets/img_logo.39362dc1.png';
        
        let pointArray = [ //3857表示web墨卡托坐标系，4326表示经纬度坐标
            new GE.Point(13376713.90129997, 3540579.2959903134, 0, '3857'),
            new GE.Point(13376711.98134067, 3539826.5375406537, 0, '3857'),
            new GE.Point(13377952.49603797, 3539759.3270052206, 0, '3857'),
            new GE.Point(13378008.185227688, 3540675.3111583497, 0, '3857'),
            new GE.Point(13377184.375437068, 3540339.2581293588, 0, '3857')
        ];
        let polygonData = {
            pointArray: pointArray,  //多边形的顶点数组
            // textureImg: img, //贴在多边形上的图片
            alphaValue: 1,  //透明值
            color: '#FF1493', //多边形的颜色
            transparent: true,
            depthTest: true, //是否开启深度检测
        };
        polygon = new GE.Polygon(polygonData);
        app.add(polygon);

        // window.app.mouse.addHoverObject(polygon); //为该模型添加鼠标悬停的功能
        // window.app.mouse.removeHoverObject(polygon); //为该模型移除鼠标悬停的功能
    }

</script>

</html>